Electric heater



Feb. 19, 1935. R. F. SCHNEIDER ELECTRIC HEATER Filed July 25, 1954 IlL .NH2 I.

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ATTORNEY.

Patented Feb. 19, 1935 1,991,422

UNITED STATES PATENT OFFICE ELECTRIC HEATER v Ralph F. schneider, st. clair shores, Mien. Application July 25,1934, serialV No. A'1361535 6 Claims. (Cl. 21S-38) This invention relates to electric heaters and At the upper portion of the left end section particularly to electric heaters of the mono-unit l1 is a water expansion reservoir 16 connected type. thereto by a suitable fitting assembly 17, and at The principal object of the present invention is the lower portion of the left end section is a hole 5 to provide an electric heater which can readily Closed by e plug 18- In a ccnventchal radiator, 5 be controlled by the user thereof,`and which is adapted to be connected to piping in a househole of the mono-unit type so that it can be utilized or the like, this plug is removed to permit a cold alone and without being connectedto other heatwater inlet pipe to be connected to the radiator ers or to a central heater plant, through the hole otherwise occupied by the plug l0 Other objects of the invention will be readily 18. Since the heater of the present invention lO apparent to those skilled in the art upon referis a mono-unit heater, no such opening is needed, ence to the following detailed description of an and therefore the plus 18 iS DIOVded t0 Seel the embodiment of the invention shown in the apabove mentioned opening in the lower portion of pended drawing, Whose the left end section. The plug will be omitted in Figure 1 isapartially cut away elevational view the event the left end section is initially conl5 of the embodiment; structed to have no opening at its lower portion.

Figures 2 and 3 are right and left end views of Disposed within the hollow space of the radiathe embodiment; and whose tor and completely surrounded by the annular Figure 4 is a. detailed elevation view of part of sections 12, and extending from near one end sec- 20 the embodiment. f tion 11 to near the other end section 14, is a hol- 20 It will be understood at the outset that no at- 10W, Sheet metal bOX` 20, forming en Oven, the tempt is here made to illustrate an embodiment box being so proportioned with respect t0 the of a specific size, the embodiment here shown beradiator sections that it occupies Substantially ing of a size found suitable for purposes of illusall of the volume within the radiator. The box is tration. Further, it is here to be understood that assembled with respect to the radiator bybeing 25 while the proportions of the parts indicated are slid into the hollow space thereof through the believed to be satisfactory, no attempt is here open right end section 14, and rests on the lower made to indicate exact proportions of heaters portions of the sections12, being restrained from heretofore constructed and found satisfactory. being moved too far into the radatcr by the '1n- Referring to the drawing, it will be seen that termediate tubes of the left end section 11. The 30 the heater there disclosed includes a sectional interior of the box is completely vSealed frOm the radiator 10 comprising a left end section 11, in- Outside 0f the bOX, except OI en end Opening termediate sections 12, and a right end section Closed by a plate 2l adapted t0 be Secured to the 14.' It will be understood at this time that while box over the opening by thumb screws 22 threadthe radiator is shown as made more or less along ed into the end 23 0f the bOX- This Plate hcrmelly 35 the style and appearance of conventional seois so tightly secured to the end 23 of the box over tional east iron radiators, other radiator conthe end opening that it completes the Sealing oi structions, such as meta1 tubing or piping, may be the interior-.of the box. The plate 21 is removable utilized as the radiator 0f the embodiment from the end 23 of the box and carries the entire y In the embodiment shown, the left end section assembly of electrical and other parts of the heatl1 is of conventional construction and has a pluel- These Parts Will 110W be described in detail rality of vertical tubes connecting the top and Secured to the plate 21 so asto be carried therebottom portions 11a thereof; some, referenced by and so as to be diSDOSed Within the htericr 0f 11b, are edge tubes and some, referenced llc, are the bcX When the plete 2l iS Secured in POSitiOn intermediate tubes. The other sections differ by the thumb ScreWS 22 iS e frame 25, end Within from conventional sections in that they include and Suppcrted by this frame iS e plate 26 0f Vitreno intermediate tubes; the top and bottom porous insulation. The upper Surface 0f the Plate tions of these sections are connected by edge tubes 26 iS provided With a large number 0f Connected only, with the result that each of these sections is grooves which receive three separate heating coils in the nature of an annulus of oblong shape. 27, these being utilized separately or in conjunc- When the sections are assembled through the tion with one another to provide varying degrees medium of the nipple receiving formations 15, of heat within the oven, the control for the coils there is formed a radiator having a multi-tube being a switch 28 mounted on the outside of the end wall (the left end section) but otherwise complate 21 on a connection box 29, the switch having y pletely hollow. a handle 30 and being connected to line through the medium of a cord 31 and a jack plug 32 of conventional character. No electrical connections between the switch and the coils are indicated for the reason that these are of a character well known in the art, it being understood that the switch is a four-position switch which will provide three separate Wattages for the heater, namely 1,000, 500, and 250 Watts, to provide high heat, intermediate heat, and low heat for the oven.

Immediately above the coils 27 of the plate 26 and supported on the frame and so held thereon in any suitable manner, as for example by the brackets 34, is a sealed pan 35, adapted to contain Water. To the pan 35, at opposite points and at opposite levels, are connected tubes 13B- 37, these passing through holes in the plate 21 and having threaded ends whereby they can be connected, through unions 38, to tubes 39 and 40, in turn connected through connection unions 41 to the upper and lower portions of the right end section 14 of the radiator whereby the interior of the pan 35 will be in sealed circulatory communication within the interior of the radiator.

The oven itself is provided with a large number of tubes 43 arranged in two series and passing therethrough, one series passing therethrough longitudinally and the other transversely, the tubes being sealed from the interior of the oven so as to provide sealed air passages through the oven, it being understood, however, that the tubes 43 can also advantageously be placed in a transverse vertical position, when the circumstances under which the heater is used demand this.

The operation of the heater and its characteristics will now be described. Water is introduced into the heater, through the reservoir, to a sufficient quantity to fill the pan and substantially all of the radiator; in the normal use of the heater, one filling of water should last for an indefinite time. When it is desired to heat the room containing the heater, the switch preferably is first turned on to the high heat point. This heats the water in the pan very quickly, it being observed that the pan provides a thin layer of water over the coils. This also heats the air within the oven. 'Ihe temperature of the room is raised quickly by virtue of (l) the fact that the sealed mass of air within the oven heats quickly, so that room air, circulating through the tubes, which pass through the oven, is heated by circulation very quickly; (2) the fact that the sealed mass of heated air in the oven quickly radiates heat, through the thin walls of the oven to the surrounding atmosphere; and (3) the fact that the heated Water in the radiator, circulating therethrough and through the pan, radiates heat from the radiator just as any hot water radiator will do. Ihe three types of heating provided by this construction, therefore, operate to bring the heat of the room to the desired point very quickly. Thereafter, the switch is rotated to the intermediate heat point and left there for a while, after which the switch is rotated to the low heat point.

It will be observed that the heater here shown is a triple action heater because three different types of heating action are provided. The heater operates as a stove, the sheet metal oven containing a sealed mass of heated air; operates as a circulating air heater, room air circulating through the tubes which pass through this sealed oven; and also operates as a radiating hot water heater, the radiator containing circulating hot Wa er.

The heater here shown is inexpensive of manufacture and installation, requires no connection to other parts of the heating system, such as radiators, central heating plant, etc., and is extremely economical of operation, it being found that over prolonged periods of heating the switch is on the low heat point practically all of the time.

The heater here shown is intended to amplify a line of electrical heaters to be manufactured and sold, of which the heater shown in my application Serial No. 693,839, dated October 16, 1933, now Patent No. 1,968,776, dated July 31, 1934, is one.

Now having described an embodiment of the invention, reference will be had to the following claims for the determination of the scope of my invention.

What I claim is:

1. A heater comprising an oven containing a sealed mass of air, means therewlthin for heating said air, means permitting room air to circulate through said oven in sealed relation with respect to the interior thereof, a radiator around said oven, a pan within said oven adjacent said heater and having its interior sealed with respect to the interior of the oven, and means communicating the interior of the pan with the interior of the radiator in sealed circulation relation.

2. A heater comprising an oven containing a sealed mass of air, means therewlthin for heating said air, means providing paths through which room air may circulate, said oven adjacent said heater and having its interior sealed with respect to the interior of the oven, and means communicating the interior of the pan with the interior of the radiator in sealed circulation relation.

3. A heater comprising a sectional radiator having communicating annulus-type sections, a sealed sheet metal box within the annular sections, electric coil means within said box for heating the interior thereof and energized from outside said box, a water containing pan within said box and sealed therefrom, and tubes connecting said pan and said radiator to place their interiors in sealed series circulation relation.

4. A heater comprising a sectional radiator having communicating annulus-type sections, a sealed sheet metal box within the annular sections, electric coil means within said box for heating the interior thereof and energized from outside said box, a water containing pan Within said box and sealed therefrom, and tubes connecting said pan and said radiator to place their interiors in sealed series circulation relation, and tubes passing through said box to permit room air to circulate therethrough.

5. A heater comprising a sectional radiator having communicating rectangular annulus-type sections, one end section having edge tubes and intermediate tubes, the other sections having edge tubes only, a rectangular sheet metal sealed box within the annular sections and restrained from relative movement with respect to the radiator by the intermediate tubes of the end section, electric coil means within said box for heating the interior thereof, one end of said box having an opening, a plate closing said opening and secured to the box and carrying said coil means, a sealed water containing pan Within said box and carried by said plate, tubes passing through said plate and communicating the interior of the pan with the interior of the radiator.

6. A heater comprising a sectional radiator having communicating rectangular annulus-type sections, one end section having edge tubes and intermediate tubes, the other sections having edge tubes only, a rectangular sheet metal sealed box within the annular sections and restrained from relative movement with respect to the radiator by the intermediate tubes of the end section, electric coil means within said box for heating the interior thereof, one end o! said box having an opening, a plate closing said opening and secured to the box and carrying said coil means, a sealed water containing pan within said box and carried by said plate, tubes passing through said plate and communicating the interior of the pan with `the interior of the radiator, and tubes passing through said box in diierent directions to permit air to circulate therethrough.

RALPH F. SCHNEIDER. 

